<?php
/**
 * 
 * +------------------------------------------------------------+
 * @category Cache 
 * +------------------------------------------------------------+
 * 数据缓存管理基类，所有数据管理类必须继承该类
 * +------------------------------------------------------------+
 *
 * @author anzai <236049524@qq.com>
 * @copyright http://www.judianyun.com 2012
 * @version 1.0
 *
 * Modified at : 2012-02-16 11:24:35
 *
 */
abstract class Cache extends Base {
	function set($key,$value){}
	function get(){}
	function clear(){}
	function close(){}
	function delete($key){}
}